Cloud service cannot connect to the gateway through service bus. You may not be able to use the Data Factory Copy Wizard ...

Azure Data Factory

Cloud service cannot connect to the gateway through service bus. You may not be able to use the Data Factory Copy Wizard to create data pipelines for copying data from/to on-premises data stores. Please follow these steps to get the gateway back online: 
(1) Enable outbound ports 5671 and 9350-9354 on both Windows Firewall on the gateway machine and Corporate Firewall. 
(2) Configure proxy settings on the gateway. 
(3) Remove static IP limitation on the proxy server. 
See Ports and security considerations and Proxy server considerations in the Data Management Gateway article for details.  As a work-around, you can use Data Factory Editor in Azure Portal (or) Visual Studio (or) Azure PowerShell.

Cannot perform operation on a Factory which failed to be created. Factory creation failed due to internal system issue. Either ... Cannot set active period {0} for pipeline '{1}' due to conflicts on {2}. Try changing the active period or using autoResolve ... Cannot set active period {0} for pipeline {1} due to conflicts on {2}. Try changing the active period or using autoResolve ... Click 'Authorize' to allow this data factory and the activities it runs to access this Data Lake Store with your access rights ... Cloud service cannot connect to the gateway through service bus. You may not be able to use the Data Factory Copy Wizard ... Compute type '{0}' is not enabled for subscription '{1}'. Please contact Azure Data Factory support team for further assistance. ... Compute type '{0}' is not enabled for subscription '{1}'. Please contact Azure Data Factory support team for further assistance: ... Connection string specified for '{0}' is invalid. Please check the '{1}' part in connectionString property in {0} linked ... Connection string specified for {0} is invalid. Please check the {1} part in connectionString property in {0} linked service. ...